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| Paper: |
Polarization Model for the New Vacuum Solar Telescope |
| Volume: |
489, Solar Polarization 7 |
| Page: |
297 |
| Authors: |
Yuan, S. |
| Abstract: |
It is essential to properly calibrate the instrumental polarization for solar telescopes, if one wants to achieve a high spectro-polarimetric accuracy. Model fitting is an efficient calibration method for telescopes with alt-azimuth mount. We have constructed an ideal model for the New Vacuum Solar Telescope (NVST) which describes its pupil and time-dependent polarization properties. An integration of polarization ray-tracing in pupil is implemented for solving the net polarization of main optics. The time and season-dependent polarization of the Coudé optics is calculated based on the NVST geometry and complex refractive index of ideal Al film. |
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